Air-pumping attachment for water-pumps.



APPLICATION FILED NOV. 1 1909.

Patented Oct; 11,1910.

INVENTOR.

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ATTORNEY.

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CALVIN I-I. MERRILL, OF SHENANDOAH, IOWA.

AIR-PUMPING ATTACHMENT FOR WATER-PUMPS.

Specification of Letters Patent.

Application filed November 1, 1909.

Patented Oct. 11, 1910.

Serial No. 525,804.

To all whom it may concern:

Be it known that I, CALVIN H. MERRILL, a citizen of the United States,residing at Shenandoah, in the county of Page and State of Iowa, haveinvented certain new and useful Improvements in Air-Pumping Attachmentsfor Water-Pumps, of which the followin is a specification, referencebeing had therein to the accompanying drawing.

My invention relates to improvement-s in that class of air pumpingattachments, which are designed to be attached to ordinary, singleacting water pumps, and the objects of my improvements are, first; toprovide a neat, simple, substantial and durable attachment of thisclass, which can readily be attached to the head of an ordinary waterpump, and when so attached, will pump air under pressure at the sametime that water is pumped by said water pump; second, to so constructsaid attachment, that said pumped water shall effectually cool theinterior of the cylinder of said attachment and be forced therefrom,under pressure, by the piston in said cylinder; third, to provide airand water directing means, and air and water storing means, whereby saidpumped air and said pumped water, may be either directed together intoone ordinary storage tank, commonly termed a pressure tank, or beseparately stored for separate uses; also, whereby said pumped air canbe exhausted into the open air, while said pumped water is beingdirected into said storage tank; and further to so arrange and constructsaid air directing means, that air under pressure, in said separate airstoring means, may either be directed therefrom into said pressure tank,or be exhausted into the open air; and to so arrange and connect saiddirecting and storing means, that efficient drainage thereof isobtained; fourth, to so construct and arrange the parts of an airpumping attachment for water pumps, that the same shall be cheap in costof manufacture and shall be operated with the minimum amount offriction. I attain these objects by the mechanism illustrated in theaccompanying drawing, in which;

Figure 1 is a longitudinal section, cut vertically through the center ofall the parts. Figs. 2, 3, 4i and 5 are sections, similar to Fig. 1, ofthe air directing cock, showing the gate of said cock in differentpositions.

Referring to Fig.1, air cylinder 1 is connected by nipple 2 with theordinary pump head 3 connected by supply pipe 4 with the ordinary watercylinder 5, provided with water inlet check valve 6 in the lower endthereof, adapted to admit water 7 from well or source of water 8, intosaid water cylinder.

Air cylinder 1 is provided with cylinder head 9, in which is mounted theair inlet valve 10, having stem 10, actuated by spring 11, adapted tomovably hold said valve in closed position. The tension of said springis adjusted by nut 12, screwed on said stem and secured in place by locknut 13. Cylinder head 9 is also provided with air outlet valve 14:,adapted to close outlet opening 15, by the gravity of said outlet valve.Said outlet opening is connected by pipe 16 with port 16, formed in airdirecting four way cook 17, provided with rotatable air direct-- ingcock gate 17 adapted to be rotated in said cock by cock handle 17Cylinder head 9 is also provided with gland 18, through the center ofwhich piston rod 19 is reciprocatively moved by power (not shown,)applied to journal bearing 19, formed in the upper end thereof. Thelower end of said rod is secured to the upper portion of piston 20,provided with leather packings 21 and with water packings 22. In thelower portion of said piston is secured the upper end of plunger rod 23,which extends downward through pipe 4 into water cylinder 5, and has itslower end secured to valve cage 24:, secured on water plunger 25. Saidvalve cage liftably retains valve 26 in place, over valve opening 27,formed through plunger 25.

Pump head 3 is provided with the usual air chamber 28, adapted toovercome waterknock, and is also provided with gated spout 29, openedand closed by spout gate 30, operated by gate rod 31, screwed throughspout gland 32 by handle 33.

Water discharge pipes 34 and 34: communicatively connect pump head 3with pressure tank 35, and are provided with check valve 36, openingtoward said pressure tank.

Discharge pipe 34 is provided with T con- 38" and with check valve 39,opening toward said tank; also by said T 37 and by the portion of pipe34 which connects said T with tank 35, which together with pipe 16 andair discharge port 15, form air directing and air conducting means,.whereby air is directed and conducted from cylinder 1 into pressure tank35.

Through the upper side of cock 17 is the port 41, communicativelyconnected with air storage tank 40* by pipe 41.. Said tank is providedwith pressure gage 40- and with service cook 40, with which isconnectedany desired device, (not shown); adapted to use air under pressure.

Pressure tank 3'5 is provided with the usual glass water gage 35 andwith ordinary pressure gage 35 said tank is also provided withservice:cook 35, with which any de sired pipe system or devices are connectedfor using water under pressure.

Port 42 formed through the side of cook- 17 is provided with air exhaustpipe 42.

The previously mentioned ports in cook 17,. which I shall term inletport 16-, pres sure tank port 38 air storage tank port. 421 and exhaustport 42 are opened and closed by cock gate 1'7", rotated in said cock byhandle 17, for directing. air therethrough, as hereinafter described,

In installation, the well known plunger rod tube, (not shown,-);carrying an ordinary plunger rod gland on the upper end thereof isremoved from. ordinary pump head 3', from the aperture into which nipple2 is secured said nipple is then secured in said aperture, and the lowerend of air cylinder 1 is secured on said nipple, and together with thethereto attached. p1-pe4 and water cylinder 5 are secured by ordinarymeans, (not shown,,) in-the position seen, with cylinder 5; submerged inwater 7, and with air cylinder 1 above saidwater; The tension of spring1 1 is so adjustedas to promptly lift inlet valve 10- to closed posi--tion, as seen-; four way cock gate 17 is rotated by handle 17 to theposition seen in Fig. 1, for directing air into storage tank 35. Thedescribed pipes, cocks, valves pipe coupling, and. tanks of any desiredsizes and pro:- portlons are arranged and connected with said aircylinder and said. water cylinder asshown.

In operation, power as previously described, is applied to piston rod19, thereby reciprocating piston 20' in. cylinder 1, and also recirocating plunger 25 in cylinder 5,. thus per orming. the well known.single acting. operation of, pumping air in cylinder 1 and water incylinder 5'. Water 7 in cylinder 5, is lifted therefrom through pipe 4into pump headv 3, through nipple 2 into the .ilower end portion ofcylinder 1, as seen at 7 and follows piston 20 throughout the entire upstroke thereof. Water 7 effectually cools the interior of cylinder 1 andlnoistens leather packings 21, thereby rendering unnecessary thelubrication with oil of said packings, said cylinder, and piston 20.This thorough cooling of cylinder 1, cools and consequently contractsthe air that is pumped therein, thereby adding to the chiciency of thedescribed air pumping attachment, in the pumping of air, as hereinafterdescribed.

During the previously described up stroke of piston 20, air in cylinder1 is forced therefrom through port 15,. and lifts outlet valve 14 to theposition seen, after which said air is conducted through the followingconductingj means into tank 35 pipe 16,. cock port. 16, cook 17 pastcock gate 17, through cock port 38, uppper portion of pipe 38, checkvalve 39 lower portion of pipe 38, T 37 and thence through part of pipe34, into said tank 35-. During the described passage of air, valve36,.by the gravity thereof, remains closed, as seen and prevents backflow of air from pipe 34 into pumphead 3.

During each down stroke of plunger 25, valve 6 gravitates toclosedposition, (not shown,) and valve 26 is lifted toopen position by water7, in said cylinder, which thereafter freely passes through valveopening, 27 During the described d own stroke of plunger 25', air piston20 also makes a down stroke, and forces Water 7 from cylinder 1 throughthe following Water conducting means nipple 2, pump head 3, pipe 34,-opening valve 36, thence through a portion of pipe 34, through T 37 andthence through the remaining portion of pipe 34, into tank 35.

Piston 20,. during, the previously described down stroke thereof, causesa vacuum to be formed in the upper end portion of cylinder 1,. uponwhich air outlet valve14 gravitates toclosed position and air inletvalve 10 is -moved to open position, (not shown,.) by

outside atmospheric pressure, refilling cylinder 1 wlth a1 During thedescribed down stroke of piston 20, check valve 39' is closed bygravity, and prevents back flow of air through the described airconducting means.

The previously described operations of pumpmg air an water into pressuretank 35, is ordinarily continued until said water has reached apredetermined height 7 visible through glass gage 35. Should anypredetermined pressure of air in the upper portion 35 of said tank, bereached andshown by pressure gage 35, before said water reaches point7"; cock gate 17 is rota-ted to the position seen in Fig. 2, therebydirecting pumped air from cock 17 through port 41 and. pipe 41, into airstorage tank 40, from whence said air is used for any compressed airpurposes, through cook 40'.

When air pressure gage 40 shows suflioient pressure of air in tank &0,cockgate 17 is rotated to the position seen in Fig. 3, thereby directingair from cock 17, through exhaust port 42 and exhaust pipe 42, into theopen air.

Should pressure of air, in upper portion 35 of tank 35, be lowered fromany cause, said pressure of air can be raised, by rotating cock gate 17to the position seen in Fig. 4, thereby directing air under pressurefrom air storage tank 4:0, through pipe 41, cock port 41, and thencethrough the described air conducting means, into pressure tank 35.

Should moisture, from condensation, or other cause, accumulate in tank4&0, the same is blown therefrom, through pipe 41, port 41, cook 17,exhaust port 42 and exhaust pipe 42, into the open air, upon rotatingcock gate 17 to the 'position seen in Fig. 5.

Water under pressure in pressure tank 35, is used therefrom through cock35", for any desired purpose.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent, is

In an air pumping attachment for water pumps, in combination; a pressuretank, adapted to store air and water, under pressure; a pump head,having water conducting means, communicatively connecting said pump headwith said pressure tank, said water conducting means being provided witha check valve therein, opening toward said pressure tank, and with a Tconnection,

between said pressure tank and said check valve; an air cylinder, havinga piston therein, provided with driving means, for reciprocativelydriving said piston, said air cylinder having the'lower end thereofcommunicatively connected with the upper side of said pump head, theupper end of said air cylinder being provided with an air inlet valveand an air outlet port, said outlet port having an outlet check valvetherefor; single acting water pumping means, communicatively connectedwith the lower side of said pump head and in alinement with said aircylinder; a plunger for said water pumping means, and driving meansconnect ing said plunger and said piston, whereby said plunger isreciprocatively driven; air conducting means, adapted to conduct airfrom said air outlet port into said T connection; a check valve in saidair conducting means, opening toward said T connection; a four way cockin said air conducting means, said four way cock having an inlet cockport, a pressure tank port, an exhaust port and a storage tank port,formed therein; a rotatable cock gate in said cock, adapted to open andclose said ports, as specified, and a cock handle, whereby said cockgate is rotated.

In testimony whereof I aflix my signature in the presence of twowitnesses.

CALVIN H. MERRILL.

lVitnesses:

LOUISE Cox, LUKE E. I-IINToN.

